16648697 has 24 divisors (see below), whose sum is σ = 19324800. Its totient is φ = 14309568.

The previous prime is 16648691. The next prime is 16648703. The reversal of 16648697 is 79684661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16648691) and next prime (16648703).

It is not a de Polignac number, because 16648697 - 2⁶ = 16648633 is a prime.

It is a super-2 number, since 2×16648697² = 554358223595618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16648691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210704 + ... + 210782.

It is an arithmetic number, because the mean of its divisors is an integer number (805200).

Almost surely, 2^16648697 is an apocalyptic number.

It is an amenable number.

16648697 is a deficient number, since it is larger than the sum of its proper divisors (2676103).

16648697 is a wasteful number, since it uses less digits than its factorization.

16648697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 164 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 16648697 is about 4080.2814853880. The cubic root of 16648697 is about 255.3446422846.

The spelling of 16648697 in words is "sixteen million, six hundred forty-eight thousand, six hundred ninety-seven".